Viper VaporCheck is a cross-woven reinforced under-slab vapor barrier specifically designed to prevent moisture migration through concrete slabs-on-grade. The high-density cross-woven reinforcing fibers are fused together using molten polyethylene, creating a high strength product with low water vapor permeability. Viper VaporCheck is ideal for demanding applications requiring the use of a heavy-duty vapor barrier and exceeds all ASTM E 1745 Class A requirements. ASTM E 1745 is the most recognized industry standard for under-slab vapor barrier/retarders.
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